
.banner{
	width: 80%;
	margin: 20px auto;
	height: 500px;
	position: relative;
}
.banner .bg{
	width: 100%;
	height: 500px;
	border-radius: 10px;
}
.z{
	position: absolute;
	top: 39%;
	left: 0px;
	cursor: pointer;
	display: none;
}
.r{
	position: absolute;
	top: 39%;
	right: 0px;
	cursor: pointer;
	display: none;
}
.content{
	width: 80%;
	margin: 50px auto;
}